One vertex per element, one color per generator, with an edge from x to x·s.
(2,3)(7,9)(8,10)(14,15)(17,18)(19,21)(20,28)(22,24)(23,27)(25,31)(26,32)(29,30)(33,34,39,41)(35,40,43,37)(36,42,46,48)(38,44,45,47)(1,2,6,3)(4,7,12,9)(5,8,13,10)(11,14,16,15)(17,19)(18,23)(20,29)(21,24)(22,27)(25,30)(26,31)(28,32)(33,35,39,43)(34,40,41,37)(36,45,46,38)(42,47,48,44)(5,13)(8,10)(11,16)(14,15)(18,24)(21,23)(25,28)(30,32)(34,41)(35,43)(38,45)(42,48) involution — undirected(1,3,6,2)(4,7,12,9)(5,10,13,8)(11,14,16,15)(17,20,22,31)(18,25,24,28)(19,26,27,29)(21,30,23,32)(33,36)(34,42)(35,38)(37,47)(39,46)(40,44)(41,48)(43,45)(1,4,6,12)(2,7,3,9)(5,11,13,16)(8,14,10,15)(17,19)(18,23)(20,29)(21,24)(22,27)(25,30)(26,31)(28,32)(33,37,39,40)(34,43,41,35)(36,44,46,47)(38,48,45,42)(1,5)(2,8)(3,10)(4,11)(6,13)(7,14)(9,15)(12,16)(17,21,22,23)(18,19,24,27)(20,30,31,32)(25,26,28,29)(33,38)(34,44)(35,36)(37,48)(39,45)(40,42)(41,47)(43,46)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.